Since we have so many threads/posts on this issue, i'm going to condense. Use our search feature, set it to All Forums, expand the date range to ALL, and use 10053 as search term to wade thru all the threads. Note that i'm not including all the various hardware & hiccups things that can cause the occasional 10053 disc.

Many users have been reporting frequent random 10053 disconnect problems during DCC. This seems to be an issue primarily with winXP and occasionally win2k. No one has found a one solution fits all answer, but many have said one or more of the following stopped the problem.

-disable winxp's firewall

-dont use port 6667 to connect to a network. Most networks have a range of ports, usually within 6660-6669,7000-7001 and you can specify a port with /server some.server.here:7000